Avaya 1600 Series Installation Manual page 61

VLAN and DHCP
The use of VLAN has implications on DHCP if DHCP is being used for support of IP phones and or PCs. The table below
details the available options when using a single port for PC and IP Phones on a VLAN enabled network.
DHCP Option
None (Static addressing)
Separate DHCP Servers
Multihomed DHCP Server
DHCP Relay
If using DHCP, when the IP phone starts it first makes a DHCP request without a VLAN tag.
·
If the DHCP reply contains a new VLAN setting as part of the SSON scope, the phones will release all its
existing IP address and makes a new DHCP request using the newly supplied VLAN ID
·
If the IP Phone does not get a new VLAN ID, it will continue with the settings provided in the original DHCP
reply
A VLAN ID can also be passed to a phone through the settings file that it loads. Again the IP phone will release all its
existing IP parameters and then make a new DHCP request using the newly supplied VLAN ID.
In the example below, the when the IP phones receives a DHCP response from the DHCP server on the data VLAN, that
response contains the VLAN ID of the voice VLAN. The phone then releases the original data VLAN settings it obtained and
sends a new DHCP request to the voice VLAN.
Option Data VLAN DHCP Settings
IP Address 192.168.43.x
Mask 255.255.255.0
Router 192.168.43.1
SSON L2Q=1, L2QVLAN=202,
Scope VLANTEST=0
The VLANTEST parameter is the length of time the IP Phone should make DHCP requests in a VLAN (0 means unlimited
time).
H323 Telephone Installation
IP Office™ Platform 11.0
Description
Manual configuration of each IP Phone
Two PCs, one for each VLAN
A single PC with two NIC Cards; one for each VLAN
The option must be supported by the Ethernet switch
Voice VLAN DHCP Settings
192.168.202.x
255.255.255.0
192.168.202.1
MCIPADD=192.168.202.1, MCPORT=1719, HTTPSRVR=192.168.202.X
VLANTEST=0
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Installation: Other Installation Options
Issue 23e (Friday, February 15, 2019)
Page 61